Phone: 425.415.0551

Fax: 425.415.0311


Riley Group Corporate Office

17522 Bothell Way NE

Bothell, WA 98011

© 2014 Riley Group.
All rights reserved.


RGI’s hydrogeologists work in conjunction with our geotechnical engineering group and with our environmental consulting group on a myriad of due diligence related services, including construction dewatering studies, stormwater infiltration assessments, and the characterization of contaminated groundwater systems. The hydrogeology team is dedicated to helping clients meet the stormwater management requirements detailed in the Department of Ecology’s 2014 Stormwater Management Manual for Western Washington, the 2016 King County Surface Water Design Manual, and other similar manuals for cities and counties across the Pacific Northwest.

Routine hydrogeology services include:

  • Hydrogeologic Assessments
  • Stormwater Infiltration Assessments
  • Groundwater Modeling (MODFLOW)
  • Groundwater Mounding Analysis
  • Seasonal High Groundwater Monitoring
  • Low-Impact Development Infiltration Assessments
  • Aquifer Hydraulic Testing
  • Monitoring Well Design/Installation
  • Groundwater Sampling and Analysis
  • Dewatering Assessments